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Levelor™ and  Magnesium 5000™ — Barrel Racing (Levelor™ and Magnesium 5000™ by Med-Vet Pharmaceuticals offer support a calmer…)

Levelor™ and  Magnesium 5000™

Levelor™ and Magnesium 5000™ by Med-Vet Pharmaceuticals offer support a calmer mind, better

Got an anxious or hormonal horse who needs magnesium-based calming and metabolism support?

Reviewed by Ann Pruitt, InfoHorse.com · Updated June 2026
Levelor calming and hormonal horse supplement 5.3 lb meal by Med-Vet Pharmaceuticals
Levelor calming and hormonal horse supplement 5.3 lb meal by Med-Vet Pharmaceuticals
Levelor™ and Magnesium 5000™ by Med-Vet Pharmaceuticals offer support a calmer mind, better metabolism, muscle recovery and helps support optimal hormone levels in your horse.


About Med-Vet Pharmaceutical

Med-Vet Pharmaceuticals (MVP) has been providing horse owners of all disciplines quality equine health and nutritional products since 1972 - Over 4 decades! Quality products, competitive pricing and outstanding service cornerstone's our goal for "100 % Customer Satisfaction!" While MVP offers a wide variety of products that can be given to any horse, we specialize in supplements for performance horse. MVP supplements can assist with a variety of different functions related to your horse’s health—from joint support to calming supplements; gastric support, and everything in between.

Whatever extra nutrition your horse may need, MVP has the product to aid in that extra support.

Many customers love how quickly they’ve seen improvements and experienced a difference in their horse!

Is It True That Med Vet Pharmaceuticals Is An Audited Member of the NASC (National Animal Supplement Council)?
YES! That means that our formulas are actually tested and Proven to have the quantity and quality of ingredients that we claim-- this is an expensive and rigorous process that many companies would run from-- but we welcome! Formula integrity, along with the highest level of quality ingredients has been the mission of MVP products the past 20 years. MVP products are marketed in both the USA and International marketplace.

Most quality horse catalogs (ValleyVet.com, SmartpakEquine.com, Stateline Tack, United Vet Equine, and others carry MVP products. "MVP - Guarantees 100% customer satisfaction!" Member of National Animal Supplement Council (NASC)

LEVELOR™ Helps Support a Quieter Disposition In Your Mare... or Gelding?
MVP’s Levelor™ is designed to support a quiet disposition in both mares and geldings. Containing raspberry leaf which was traditionally used to strengthen and tone muscles (uterine), the leaves contain an alkaloid known as fragerine, which relaxes the uterine muscle, which may help to reduce the harshness of the menstrual cycle.

Levelor™ also contains Magnesium as well as Dong Quai Root, referred to as the female ginseng, it is rich in vitamins and minerals and is one of the most widely used herbs in traditional Chinese medicine.

Does Your Horse Exhibit Any Of These Behaviors or Symptoms?

  • Anxious/Nervous Behavior
  • Blood sugar/Glucose Metabolism
  • Muscle Function
  • Immune System Function

If You Understood The Benefits of Magnesium Your Horse Would Be On Magnesium 5000!
Magnesium is one of the most essential nutrients necessary in a horse’s diet. In fact, roughly 30 percent of a horse’s total magnesium amount is for muscle, yet it’s sometimes the most neglected mineral in common horse feeds. Magnesium supplementation can help improve muscle performance because it increases oxygen delivery to muscle tissue, promoting muscle strength and endurance.

Magnesium also helps promote a healthy immune system as well as plays a vital role in regulating blood sugar levels and is known for its role in energy metabolism and protein synthesis.

Is It True That Supporting Healthy Magnesium Can Help My Insulin Resistant Horse?
Yes. If magnesium is low at the cellular level carbohydrate metabolism will be impaired resulting in reduced insulin response (insulin resistance).

A known symptom of magnesium deficiency is anxiety and/or agitation and why you will find magnesium as a main active ingredient in most calming supplements. Consider overall calcium in diet when supplementing with Magnesium.

The two minerals are ideally kept within a ratio of 2.5:1 to 3:1, calcium to magnesium.
MVP’s Magnesium 5,000provides a concentrated source of magnesium (5,000 mg/serving) to help promote normal nervous function and a healthier metabolism

What Do Horse Owners SAY About Levelor™ and Magnesium 5000?
"We Magnesium 5000 this daily with morning feed to both of our horses. Generally feeds and hay do not contain adequate levels of magnesium. After confirming not a training issue, a friend recommended magnesium supplement to help our horses' nervous and distracted behaviors which can be symptoms of magnesium deficiancy. Both horses responding well. Healthy coat, temperament and better attitude. Recommend!”
-Rick
“Magnesium 5000 helps my eventers stay focused and on the job. They eat it right up, it's affordable and it works. Perfect!”
-Sarah

“I started my gelding on LEVELOR and I have noticed a significant improvement in his disposition. I believe he's just more comfortable with life. I have tried other calming supplements that include tryptophan and after some research I discovered that tryptophan doesn't even cross the blood brain barrier....no wonder it didn't work. I've had him on Exceed 6-way, and also flies away, so I decided to give MVP another try, and I'm glad I did.”
-Kristi
“I have used LEVELOR for quite some time now on several different show mares. I see impressive results in helping them have quieter heat cycles and more focus when training and showing. I will continue to be a loyal customer of this product.”
-Amy

What If I Wanted To Add GastroPlex™ For Ulcers, Is That OK?
Yes, GastroPlex™,in either the paste or pellets, may be safely added to any MVP product for specific concerns such as gastric support, without concerns of overlap.

Order Your MVP Products Today!

No one outperforms MV P! MVP is carried by most distributors that you will find, in your own catalogs. United Vet Equine, ValleyVet, Smart Pak Equine, and more carrying many MVP products. Just so you know, you can find the entire line of MVP products at United Vet Equine.


About Med-Vet Pharmaceutical

Med-Vet Pharmaceuticals (MVP) has been providing horse owners of all disciplines quality equine health and nutritional products since 1972 - Over 4 decades! Quality products, competitive pricing and outstanding service cornerstone's our goal for "100 % Customer Satisfaction!" While MVP offers a wide variety of products that can be given to any horse, we specialize in supplements for performance horse. MVP supplements can assist with a variety of differen

Levelor™ and Magnesium 5000™ by Med-Vet Pharmaceuticals offer support a calmer mind, better

Get in touch

Visit medvetpharm.com


Levelor calming and hormonal horse supplement 5.3 lb meal by Med-Vet Pharmaceuticals
Levelor calming and hormonal horse supplement 5.3 lb meal by Med-Vet Pharmaceuticals
What are Levelor™ and Magnesium 5,000™?
Levelor™ and Magnesium 5,000™ are two complementary calming and muscle-support supplements from Med-Vet Pharmaceuticals (MVP), built for barrel horses and other performance athletes that run hot. Levelor™ is a highly palatable meal-form formula recommended to help support a healthy hormonal and nervous system and a quiet disposition in both mares and geldings. Magnesium 5,000™ pellets deliver the single essential mineral most often tied to muscle function, nerve signaling and a calm demeanor, making the pair a logical stack for a tense, reactive runner.

Magnesium 5000 pellets horse muscle and nerve supplement 20 lb and 40 lb by MVP
Magnesium 5000 pellets horse muscle and nerve supplement 20 lb and 40 lb by MVP

Who makes them?

Both products are formulated and sold by Med-Vet Pharmaceuticals (MVP), a company that has provided horse owners of every discipline with quality equine health and nutritional products since 1972 — over four decades, with the website now celebrating 40 years of excellence in horse health and nutrition. MVP's broader catalog spans joint, gastric, respiratory, hoof, metabolic, muscle and foal-care formulas, so a barrel program can source its calming, recovery and topline support from one trusted name. You can reach MVP directly at or.

Magnesium 5000 benefits and feature highlights for nervous horses by Med-Vet Pharmaceuticals
Magnesium 5000 benefits and feature highlights for nervous horses by Med-Vet Pharmaceuticals

What is inside each formula?

Levelor™ combines raspberry leaf, taurine, magnesium, dong quai root powder and chasteberry for comprehensive hormonal and behavioral support — the taurine and magnesium promote calmness while raspberry leaf supports normal hormone levels for balanced behavior. Magnesium 5,000™ is built around elemental magnesium, the mineral required for bone growth, metabolic function and healthy hooves, which also helps maintain normal muscle and nerve function, a healthy heart, a healthy immune system and strong bones. Because a symptom of magnesium deficiency is agitation or anxiety, supplementing it directly targets the edginess many barrel horses show in the alley.

Horse and rider lifestyle image for MVP Magnesium 5000 calming supplement
Horse and rider lifestyle image for MVP Magnesium 5000 calming supplement

How do they work together for the barrel horse?

Magnesium 5,000™ addresses the baseline mineral side — supporting proper muscle function, electrolyte balance, normal blood pressure and the energy metabolism and protein synthesis a hard-running horse depends on for recovery between runs. Levelor™ layers hormonal support on top, helping reduce moody, cycle-driven behavior in mares while still being appropriate for geldings, and supporting muscle tone in the reproductive and GI tracts. Used as a pair, they aim to take a spooky, anxious or unfocused horse and help it stay relaxed, focused and physically loose through the pattern.

Will these test in competition?

Magnesium 5,000™ is a straightforward essential-mineral supplement, while Levelor™ is a meal-form herbal formula. MVP specifically advises that competitors check competition rulings regarding the use of dong quai root powder before showing, so barrel racers running under a sanctioning body should confirm the ingredient is permitted for their class. As with any hormonal formula, Levelor™ should not be used in pregnant or nursing mares.

What sizes and prices are available?

Levelor™ is offered in a 2.65 lb (60-day) size and a 5.3 lb (120-day) size, with the 5.3 lb listed at $61.20 and a per-day cost as low as $0.94. Magnesium 5,000™ pellets come in 10 lb (80-day), 20 lb (160-day), 40 lb (320-day) and 50 lb (400-day) sizes, with the 20 lb listed at $42.40 and a per-day cost dropping to about $0.38 in the largest size. Both are sold direct at medvetpharm.com and through equine retailers including Chewy, Amazon, Valley Vet Supply, Leedstone and Riding Warehouse.

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The Solution Section (FAQ)
What are Levelor and Magnesium 5000?

Per Med-Vet Pharmaceuticals (MVP): Levelor™ and Magnesium 5000™ support a calmer mind, better metabolism, muscle recovery, and optimal hormone levels in your horse.

Who is MVP — and what's the company's NASC status?

Per MVP: providing horse owners quality equine health and nutritional products since 1972 — over 4 decades. Audited member of the NASC (National Animal Supplement Council) — meaning formulas are tested and proven to have the quantity and quality of ingredients claimed.

Per the company: Formula integrity, along with the highest level of quality ingredients, has been MVP's mission for the past 20 years. "100% customer satisfaction guaranteed."

What does Levelor specifically support?

Per MVP: Levelor™ is designed to support a quiet disposition in both mares and geldings. Per the company: contains raspberry leaf which was traditionally used to strengthen and tone uterine muscles. The leaves contain an alkaloid known as fragerine, which relaxes the uterine muscle — may help reduce the harshne[ss of estrus] in mares.

How is Levelor different from Eclipse PM — same MVP brand?

Per MVP: distinct products in the same MVP performance-supplement portfolio.

  • Levelor + Magnesium 5000 — calmer-mind / metabolism / hormone-support combo (this product)
  • Eclipse PM — EPM nutritional support (Wave 8 canonical)

Same MVP NASC-audited posture; different equine-system focus. Choose based on whether the need is calming/hormone-support or EPM-treatment-adjunct nutrition.

Where can I find MVP products?

Per MVP: marketed in both USA and international markets. Most quality horse catalogs carry MVP, including ValleyVet.com, SmartpakEquine.com, Stateline Tack, United Vet Equine, and others. Direct: Phone 833-809-4848, email [email protected], website http://medvetpharm.com/. Pricing as quoted is subject to change.

What are Levelor and Magnesium 5,000 used for?
They are two calming-focused equine supplements from Med-Vet Pharmaceuticals. Levelor is recommended to help support a healthy hormonal and nervous system and a quiet disposition in mares and geldings, while Magnesium 5,000 pellets support proper muscle function, a healthy nervous system and a calmer demeanor. Barrel racers and other performance riders often use them to help a hot, reactive horse stay relaxed and focused.
Who manufactures Levelor and Magnesium 5,000?
Both are made by Med-Vet Pharmaceuticals (MVP), which has supplied horse owners of all disciplines with quality equine health and nutritional products since 1972. The company's website celebrates 40 years of excellence in horse health and nutrition. You can contact MVP at 800-366-8986 or 833-809-4848.
What is in Levelor?
Levelor is a meal-form formula that combines raspberry leaf, taurine, magnesium, dong quai root powder and chasteberry. The taurine and magnesium promote calmness, while raspberry leaf supports normal hormone levels for balanced behavior. The blend is designed for comprehensive hormonal and nervous-system support.
How does Magnesium 5,000 help a nervous horse?
Magnesium is an essential mineral that helps maintain normal muscle and nerve function, and a symptom of magnesium deficiency is agitation or anxiety. By supplementing magnesium directly, Magnesium 5,000 supports the calm, steady muscle and nerve signaling that many anxious or reactive horses lack. It is widely included in calming programs for exactly this reason.
Can Levelor be used on geldings, or only mares?
Levelor may be used on both mares and geldings. While it is especially valued for reducing moody, cycle-driven behavior in mares, it supports a healthy hormonal and nervous system in geldings as well. MVP markets it for a quiet disposition across both.
Will these supplements test positive in competition?
Magnesium 5,000 is a straightforward essential-mineral supplement. For Levelor, MVP specifically advises competitors to check competition rulings regarding the use of dong quai root powder before showing. Always confirm with your sanctioning body that every ingredient is permitted for your class.
Is Levelor safe for pregnant or nursing mares?
No. Because Levelor is a hormonal-support formula containing herbs such as chasteberry and dong quai, it should not be used in pregnant or nursing mares. If your mare is in foal or lactating, consult your veterinarian before adding any hormonal supplement.
What sizes does Levelor come in and what does it cost?
Levelor is offered in a 2.65 lb size that lasts about 60 days and a 5.3 lb size that lasts about 120 days. The 5.3 lb size is listed at $61.20, working out to roughly $0.94 per day. Pricing is shown on medvetpharm.com and may vary at other retailers.
What sizes does Magnesium 5,000 come in?
Magnesium 5,000 pellets are sold in 10 lb (about 80 days), 20 lb (about 160 days), 40 lb (about 320 days) and 50 lb (about 400 days) sizes. The 20 lb size is listed at $42.40, and the per-day cost drops to roughly $0.38 in the largest size. Larger bags give the best value for multi-horse barns.
Why would a barrel racer use both products together?
The two formulas target calmness from different angles. Magnesium 5,000 covers the mineral side, supporting muscle function, nerve signaling and recovery, while Levelor layers in hormonal and herbal support to steady mood and behavior. Stacking them gives a tense, hormonal barrel horse both the mineral foundation and the hormonal balance it may need.
Is Levelor palatable, or will picky horses refuse it?
MVP describes Levelor as highly palatable in a meal form, and many reviewers report their horses eat it readily. A small number of reviews note a horse that would not eat it, which can happen with any herbal supplement. If yours is picky, try mixing it into a favored feed or wetting the ration.
How much magnesium does Magnesium 5,000 provide?
As the name suggests, the product is formulated to deliver a substantial dose of elemental magnesium per serving, which is the active driver behind its muscle, nerve and calming benefits. Magnesium is required for bone growth, metabolic function and healthy hooves in addition to its calming role. Refer to the directions-for-use label on the package for the exact serving size and milligram amount.
Does Magnesium 5,000 do anything besides calm horses?
Yes. Beyond supporting a calm demeanor, it helps maintain normal muscle and nerve function, a healthy heart, a healthy immune system and strong bones. It also aids in regulating blood sugar levels, promotes normal blood pressure, and is involved in energy metabolism and protein synthesis. Some owners use it to support horses prone to abnormal fat deposits such as a cresty neck.
How do I dose Levelor for a miniature horse or pony?
MVP guidance notes that for a smaller animal around 300 lb, a half serving of Levelor is appropriate. For full-size horses, follow the feeding directions printed on the package. When in doubt, weigh or estimate your horse's body weight first using MVP's horse body weight calculator.
Where can I buy Levelor and Magnesium 5,000?
Both are sold direct from Med-Vet Pharmaceuticals at medvetpharm.com, where current sizes and prices are listed. They are also carried by major equine retailers including Chewy, Amazon, Valley Vet Supply, Leedstone and Riding Warehouse. Buying direct lets you reach MVP's team at 800-366-8986 or 833-809-4848 with product questions.
What other supplements does Med-Vet Pharmaceuticals make?
MVP offers a wide equine catalog spanning joint, gastric, respiratory, hoof, metabolic, muscle, digestive, allergy and foal-care formulas, including products such as Gastro-Plex, Exceed 6-Way, Mg + Natural E 4,000 and Bone-Max. This means a barrel program can source calming, recovery and overall wellness support from a single trusted manufacturer. Browse the full line at medvetpharm.com.
How long before I see results from these calming supplements?
Magnesium-based and herbal calming supplements typically work best when fed consistently over time rather than as a one-time dose, allowing mineral levels and hormonal balance to stabilize. Many MVP reviewers describe horses becoming noticeably calmer and more relaxed in stressful show situations with daily use. Give the product several weeks of consistent feeding and follow the label directions to judge its effect on your horse.

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Ann Pruitt
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InfoHorse.com